Knee support



FIG. 1 is a perspective view of knee support showing my new design

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

The top and the bottom view of the knee support are omitted since they are not claimed in the design. 

CLAIM The ornamental design for a knee support, as shown and described. 